The SW4 is a very compact but powerful
25 litre active subwoofer with an exceptional performance delivering superbly
controlled low bass .This is possible because of equalisation built into
the crossover circuit. The downward firing 10" bass unit is the excellent
1000 watt (peak
power) TI unit with
its large magnet, long throw, high Qts, and very stiff DPC
moisture resistant cone and strong rubber surround. The TI range have been
individually tested and selected by IPL, and have been engineered
especially for subwoofer use, The combination of these features gives this unit a large force
factor (BL) resulting in superb bass control and extension , making the
SW4 suitable for both music and AV use.

The extremely powerful SW4
SAM 300D digital amplifier /crossover unit produces 300 watt RMS (into 4 ohms) 420
watt peak power. It exhibits: silent, cool and economical operation, and incorporates;
volume control, adjustable frequency contouring (with
crossover points between 40 and 200hz), and variable phase control between 0-180
deg. It has low level inputs, both
mono and stereo, (for outputs from home cinema amps and stereo pre-amps,), and
high level inputs, (suitable for use from stereo integrated amplifier speaker
terminals). The amp
automatically senses the signal,- shutting down when not in use. THIS AMP NOW
HAS A 3 YEAR WARRANTY which you activate via the internet, direct with the
manufacturer (details supplied with amp)

This unit gives complete
versatility with Home Cinema and Stereo systems. The superbly extended but
controlled bass this unit gives is only achieved in commercial subwoofers
costing 2-3 times the price.

The total kit includes a very solid
flat-pack 22mm MDF cabinet which can be veneered (1 roll of MV1 is sufficient),
sprayed or covered in black ash Venelia. The SW4 is very simple to build and can
be completed in a day. The unit comes complete with mains lead. Low level is via gold phono sockets.
high level via 4mm plugs or spade connectors.